fact-family/add-sub-within-10/easy · 套题 41
4 problems
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1
Write the fact family for 9, 1, 10:
=
2
Write the fact family for 5, 1, 6:
=
3
Write the fact family for 6, 2, 8:
=
4
Write the fact family for 5, 4, 9:
=